4U5T-14G422-BAF thru 4U5T-14G422-BDF are F10 Nav Voice
1U5T-14G421-BAH thru 1U5T-14G421-BJH are F10 Maps
1U5T-14G424-BK is the F10 License
The files from the Ford site you listed are F9 versions of the above.
The F10 and F9 maps are compatible with Sync 3.3 and 3.4. You can stay on Sync 3.3 and install the F10 maps with the Syn3 Updater, no need to update to 3.4. See this thread:
Syn3 Updater for My20! - Ford / Sync 3 - CyanLabs Official Community